1. Window manager for GNU Emacs You can divide the screen of GNU Emacs as many as you like. Since efficiency of implementation or so depends much on the style of window division, you may have your own style of partitioning. But if you switch the mode to e-mail mode or NetNews mode, they break your favorite style. Windows.el enables you to have multiple favorite window configurations at the same time, and switch them. Furthermore, it can save all window configurations into a file and restore them correctly. From Debian 3.0r0 APT